Accession Number:

ADA190736

Title:

Anomalies in the Heat-Capacity Signatures of Submonolayer Adsorbates with Attractive Lateral Interactions.

Descriptive Note:

Technical rept.,

Corporate Author:

STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY

Report Date:

1988-02-01

Pagination or Media Count:

40.0

Abstract:

The analytic closed form of the heat-capacity signatures previously derived for the McQuistan-Hock MQH model of a lattice gas is applied to a various adsorbed systems for which the lateral interaction varies from a few meV to about 300 meV. It is shown that whenever the adsorption system can be described by a two-dimensional gas on which the substrate effects are less important than the adatom-adatom interactions, the computed temperatures at which the heat-capacity signatures display their maximum are in excellent agreement with the experimental measurements. Keywords Heat capacities, Submonolayer adsorbates, Attractive lateral interactions, Anomalies, McQuistan hock model, Two dimensional lattice.

Subject Categories:

  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE